638 



WEED FLORA OF IOWA 



Pig. 501A I 



Fig. 501-A. I. Chlcadee carrying fruit. II. 



by birds. 



Fig. 501A II 

 Berries of Horse Nettle ; carried 



^, 4 



FiQ. 502; Mixture of weed seeds commonly foimd in low ^ade Alsike Clover 

 seed : a, Alsike Clover ; b, White Clover ; c, Ked Clover ; d. Yellow Trefoil ; 

 e, Canada Thistle ; f, Dock ; g, Sorrel ; h, Buckhorn ; 1, Rat Tail Plantain ; 

 k, Lamb's Quarters ; 1, Shepherd's Purse ; m, Mayweed ; n. Scentless 

 Camomile ; o, White Campion ; p. Night-flowering Catchfly ; q. Ox-eye Daisy ; 

 I', Small-fruited False Flax ; s, Cinquefoil ; t, two kinds of Peppergrass ; 

 u, Catnip ; v, Timothy ; x, Chickweed ; y, Canada Blue Grass ; z, Clover 

 Dodder ; 1, Mouse Bar ; 2, Knotgrass ; 3, Tumbling Amaranth ; 4, Hough 

 Amaranth; 5, Heal-all; 6, Lady's Thumb (enlarged). 

 (HUlman, U. S. Dept Agr.) 



